/*
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package io.prestosql.plugin.oracle;

import com.google.inject.Binder;
import com.google.inject.Module;
import com.google.inject.Provides;
import com.google.inject.Scopes;
import io.prestosql.plugin.jdbc.BaseJdbcConfig;
import io.prestosql.plugin.jdbc.ConnectionFactory;
import io.prestosql.plugin.jdbc.DriverConnectionFactory;
import io.prestosql.plugin.jdbc.ForBaseJdbc;
import io.prestosql.plugin.jdbc.JdbcClient;
import io.prestosql.plugin.jdbc.credential.CredentialProvider;
import oracle.jdbc.OracleConnection;
import oracle.jdbc.OracleDriver;

import javax.inject.Singleton;
import java.sql.SQLException;
import java.util.Properties;

import static com.google.common.base.Preconditions.checkArgument;
import static io.airlift.configuration.ConfigBinder.configBinder;

/**
 * Guice implementation to create the correct DI and binds
 * 
 * @author Marcelo Paes Rech
 *
 */
public class OracleClientModule implements Module
{
	@Override
	public void configure(Binder binder)
	{
		binder.bind(JdbcClient.class).annotatedWith(ForBaseJdbc.class).to(OracleClient.class).in(Scopes.SINGLETON);
		configBinder(binder).bindConfig(OracleConfig.class);
	}

	private static void ensureCatalogIsEmpty(String connectionUrl) {
		try {
			OracleDriver driver = new OracleDriver();
			boolean bAccept = driver.acceptsURL(connectionUrl);
			checkArgument(bAccept, "Invalid JDBC URL for Oracle connector");
		}
		catch (SQLException e) {
			throw new RuntimeException("Invalid JDBC URL for Oracle connector", e);
		}
	}


	@Provides
	@Singleton
	@ForBaseJdbc
	public static ConnectionFactory connectionFactory(BaseJdbcConfig config, CredentialProvider credentialProvider, OracleConfig oracleConfig)
			throws SQLException
	{
		Properties connectionProperties = new Properties();
		connectionProperties.setProperty(OracleConnection.CONNECTION_PROPERTY_INCLUDE_SYNONYMS, String.valueOf(oracleConfig.isSynonymsEnabled()));

		return new DriverConnectionFactory(
				new OracleDriver(),
				config.getConnectionUrl(),
				connectionProperties,
				credentialProvider);
	}
}
